答：先化验以下铁含量，如果铁含量高，可以采用磁滑轮抛尾。
Answer: the first to assay the following fe content, if iron content high, can use magnetic pulley cast the tail.
本文提出了一种计算磁滑轮预选经济效益的方法，并导出了简单而又合理的计算公式。
A method for calculation the economic results of the preconcentration using magnetic-pulley separator is recommended and a simple and rational calculation equation is deduced from the method.
提出了用圆筒两端加制法兰与端盖平面接触轴向螺栓连接的方法设计大扭矩磁滑轮的方案。
The new scheme is put forward to design magnetic pulley with large torsional moment by means of planar contact between end-cover and added flange fixed axially by stud bolt.
利用磁滑轮串联干选，第一道磁滑轮干选保抛尾8％-10％、第二道磁滑轮干选保回收率大于98％，将改造后干选设备和工艺嵌入现有的三段一闭路破碎筛分工序中。
Magnetic pulleys are used in series for dry separation, with the first pass dry separation to ensure a 8%-10% tailings discarding and the second pass to ensure an over 98% recovery.
利用磁滑轮串联干选，第一道磁滑轮干选保抛尾8％-10％、第二道磁滑轮干选保回收率大于98％，将改造后干选设备和工艺嵌入现有的三段一闭路破碎筛分工序中。
Magnetic pulleys are used in series for dry separation, with the first pass dry separation to ensure a 8%-10% tailings discarding and the second pass to ensure an over 98% recovery.
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